Ok, heres the dilemma.

I want a wide angle lens.
My current collection is
18-200
10.5 fisheye
35mm prime

Problem is that I want to upgrade to a full format sensor shortly... so I dont want to spend too much on a dx cropped lens. Its not overly a big drama as I dont intend on selling the d300 anytime soon

looking today
Nikon AF-S DX Zoom-Nikkor 12-24mm f/4G IF-ED Lens is 1200+
Tamron SP AF 10-24mm f/3.5-4.5 Di-II LD Aspherical (IF) Lens for Nikon is +640
Tokina AT-X 124 Pro DX II 12-24mm f/4 for Nikon is about 850
prime
Zeiss Distagon T* 18mm f/3.5 ZF Lens for Nikon +1600
obviously they are different .

But I would still like to buy something that is reasonably good without spending too much if you know what I mean. I have checked the website that compares the lenses and what you may see out of them...

Has anyone got any one of the listed lenses and can give us a idea on what the pros and cons are

thanks